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So I have some sql in a varible. I could put that in a file and give it to psql as input but I wonder if there is an easy way to do this without the file ?

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Can you add some more detail please? Maybe some information about how the variable was filled, what with, what you want it to do, what language you're working in, etc. –  Majenko Mar 31 '11 at 13:42
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1 Answer

You can either pipe the command to psql

echo "$some_sql_in_a_varible" | psql -d mydatabase 

or use -c

psql -d database -c "$some_sql_in_a_varibl"

Mor info on the psql man page

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